beautypg.com

Impulse 7804e User Manual

Page 19

background image

©Sealevel Systems, Inc.
SL9219 - 06/2011

7804e Manual

19

Signal

Name

Pin #

Mode

GND

Ground

5

TD

Transmit Data

3

Output

RTS

Request To Send

7

Output

DTR

Data Terminal Ready

4

Output

RD

Receive Data

2

Input

CTS

Clear To Send

8

Input

DSR

Data Set Ready

6

Input

DCD

Data Carrier Detect

1

Input

RI

Ring Indicator

9

Input

Please terminate any control signals that are not going to be used. The most common
way to do this is connect RTS to CTS and RI. Also, connect DCD to DTR and DSR.
Terminating these pins, if not used, will help ensure you get the best performance from
your adapter.